OrbitGuard
14:32:00UTC

CJ-4468 · FENGYUN 1C DEB

OG-3 Sentinel-A vs NORAD 30291 — debris

Probability of collision8.6×10−5
Time to closest approachT−21:48:00
Decision window13h 30m
Miss distance0.884km
Statecautionfalling

Screening campaign

18 CDMs · ±1σ band
10⁻²10⁻³10⁻⁴10⁻⁵10⁻⁶10⁻⁷action thresholddecision deadlineNOWT−72hT−60hT−48hT−36hT−24hT−12hTCA

Encounter geometry

Radial0.204km
In-track0.798km
Cross-track0.288km
Relative velocity10.94km/s

Record

Secondary
30291
Screening source
COMSPOC ASTRIAGraph
Last CDM
31m ago
CDMs received
18
TCA (UTC)
2026-08-02 12:20:00Z
Decision deadline
2026-08-02 04:02:00Z
Secondary RCS
0.021 m²
Current ±1σ
0.37 decades

Burns logged

Maneuver planner

2 downstream
Proposed burnOG-3 · Sentinel-A
Delta-v0.09m/s
Propellant0.001kg
Axiscross-track
Burn duration1705s
Execute
2026-08-02 02:32:00Z
Upload pass
Fairbanks (KSAT) · T−11:12:00
Effect on CJ-4468
Pc now8.6×10−5
Pc after4.1×10−7
Miss now0.884km
Miss after2.940km
Station-keeping budget6.5 yr runway
3.409 kg after burnreserve 0.8 · capacity 5.0 kg
Downstream conjunctions2 affected
  • FENGYUN 1C DEBresolved
    CJ-4468 · T+21.8h8.6×10−54.1×10−7
  • COSMOS 1408 DEBcreated
    CJ-4492 · T+44.6h—2.1×10−6

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